GEM: Development and Decay of Storm-time Ring Current

研究人员将使用地面磁力计测量和GOES、AMPTE和GeoTail等卫星的数据来研究环电流中的地磁风暴过程。这项研究将集中在氧离子的输运和能量，以及超低频波的激发和它们在环电流衰减中的作用。这些数据将被用来确定风暴恢复阶段的开始与亚风暴开始之间是否存在一一对应关系，以及尾流对中纬度地磁指数的贡献程度。超低频波可能与环电流离子的衰变有关。这项研究将有助于我们理解与大磁暴相关的空间天气效应

The investigators will study geomagnetic storm processes in the ring current using ground-based magnetometer measurements and data from satellites such as GOES, AMPTE, and Geotail. The study will focus on the transport and energization of oxygen ions and the excitation of ultra-low frequency waves and their role in ring current decay. The data will be used to determine if there is a one-to-one correspondence between the onset of the storm recovery phase and substorm onset, and to what extent the tail current contributes to mid-latitude geomagnetic indices. Ultra low frequency waves may be related to the decay of ring current ions. The study will contribute to our understanding of Space Weather effects associated with large magnetic storms